I have no problem with human girl interaction besides in real life usually once one girl shows an interest in a guy other girls start showing interest as well trying to figure out what is so good about him. Makes sense the same thing would happen here all the human girls should be thinking hmmm there must be something about him that is extra special since he has a slime girl, an ancient & strong mummy and one of the most violent dragon bandits to have ever existed all follow him around like lost puppies. What is the secret must find out at any cost and of course by then they have fallen for him just like the monster girls.